Is it bad to have mica in mineral cosmetics?
If you’re allerging to Mica, yes. Mica is a kind of chemical that makes stuff shine, same with Bismuth Oxide. So if you’re allergic to any of those things or you have sensitive skin, both of those will break you out. Try to avoid Bare Minerals if you’re allergic to Bismuth because their products have Bismuth in it. Everyday Minerals is an alternative that doesn’t use Bismuth at all. Good luck!